Dialogflow Import Fix for Issue 6137

[A-A-R0N]

Proposed changes:

• Fixed passing the wrong value to get_nlu_data during training

Status (please check what you already did):

• added some tests for the functionality

• updated the documentation

• updated the changelog (please check changelog for instructions)

• reformat files using black (please check Readme for instructions)

• This is a fix for existing functionality which I tested against several dialogflow models.

• No documentation are updates. The steps in current documentation work as expected now.

[CLAassistant]

All committers have signed the CLA.

[sara-tagger]

Thanks for submitting a pull request 🚀 @melindaloubser1 will take a look at it as soon as possible ✨

[indam23]

Thanks for the PR! I don't have a dialogflow bot to test this with, but what happens now if the language is not defined in the config or on import? It still throws an error right?
When is the language getting overwritten and why?

Edit: Sorry I just missed the linked issue! I'll look at that

[indam23]

Thanks for noticing this! For it to go into a patch, it needs to be based off of 1.10.x, not master - do you mind rebasing it?

[A-A-R0N]

@melindaloubser1 I recreated this as PR 6188. This way I don't have to worry about any previous merge conflicts that have already been resolved.

[indam23]

Sure, that makes sense